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127 lines
4.4 KiB
127 lines
4.4 KiB
/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <pwd.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <atomic>
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#include <optional>
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#include <sstream>
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#include "common/libs/fs/shared_fd.h"
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#include "host/libs/allocd/request.h"
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namespace cuttlefish {
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constexpr char kEbtablesName[] = "ebtables";
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constexpr char kEbtablesLegacyName[] = "ebtables-legacy";
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// Wireless network prefix
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constexpr char kWirelessIp[] = "192.168.96";
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// Mobile network prefix
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constexpr char kMobileIp[] = "192.168.97";
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// Ethernet network prefix
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constexpr char kEthernetIp[] = "192.168.98";
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// permission bits for socket
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constexpr int kSocketMode = 0666;
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// Max ID an interface can have
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// Note: Interface names only have 2 digits in addition to the username prefix
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// Additionally limited by available netmask values in MobileNetworkName
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// Exceeding 63 would result in an overflow when calculating the netmask
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constexpr uint32_t kMaxIfaceNameId = 63;
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// struct for managing configuration state
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struct EthernetNetworkConfig {
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bool has_broute_ipv4 = false;
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bool has_broute_ipv6 = false;
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bool has_tap = false;
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bool use_ebtables_legacy = false;
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};
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// struct for managing configuration state
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struct GatewayConfig {
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bool has_gateway = false;
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bool has_dnsmasq = false;
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bool has_iptable = false;
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};
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int RunExternalCommand(const std::string& command);
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std::optional<std::string> GetUserName(uid_t uid);
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bool AddTapIface(const std::string& name);
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bool CreateTap(const std::string& name);
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bool BringUpIface(const std::string& name);
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bool ShutdownIface(const std::string& name);
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bool DestroyIface(const std::string& name);
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bool DeleteIface(const std::string& name);
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bool CreateBridge(const std::string& name);
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bool DestroyBridge(const std::string& name);
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bool CreateEbtables(const std::string& name, bool use_ipv,
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bool use_ebtables_legacy);
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bool DestroyEbtables(const std::string& name, bool use_ipv4,
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bool use_ebtables_legacy);
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bool EbtablesBroute(const std::string& name, bool use_ipv4, bool add,
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bool use_ebtables_legacy);
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bool EbtablesFilter(const std::string& name, bool use_ipv4, bool add,
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bool use_ebtables_legacy);
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bool CreateMobileIface(const std::string& name, uint16_t id,
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const std::string& ipaddr);
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bool DestroyMobileIface(const std::string& name, uint16_t id,
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const std::string& ipaddr);
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bool CreateEthernetIface(const std::string& name, const std::string& bridge_name,
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bool has_ipv4_bridge, bool has_ipv6_bridge,
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bool use_ebtables_legacy);
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bool DestroyEthernetIface(const std::string& name,
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bool has_ipv4_bridge, bool use_ipv6,
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bool use_ebtables_legacy);
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void CleanupEthernetIface(const std::string& name,
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const EthernetNetworkConfig& config);
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bool IptableConfig(const std::string& network, bool add);
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bool LinkTapToBridge(const std::string& tap_name,
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const std::string& bridge_name);
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bool SetupBridgeGateway(const std::string& name, const std::string& ipaddr);
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void CleanupBridgeGateway(const std::string& name, const std::string& ipaddr,
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const GatewayConfig& config);
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bool CreateEthernetBridgeIface(const std::string& name,
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const std::string &ipaddr);
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bool DestroyEthernetBridgeIface(const std::string& name,
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const std::string &ipaddr);
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bool AddGateway(const std::string& name, const std::string& gateway,
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const std::string& netmask);
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bool DestroyGateway(const std::string& name, const std::string& gateway,
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const std::string& netmask);
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bool StartDnsmasq(const std::string& bridge_name, const std::string& gateway,
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const std::string& dhcp_range);
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bool StopDnsmasq(const std::string& name);
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} // namespace cuttlefish
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